May weather in Marion, IA
The average temperature in Marion in May is 61.7°F (49.6°F–73.8°F). Average precipitation: 4.74 inches.
May is a spring month in Marion, and is warmer than the annual average of 49.9°F. Daily temperatures swing about 24.2°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 23m. For travel, May is a comfortable month to visit.
Avg High
73.8°F
Avg Low
49.6°F
Precipitation
4.74 in
Daylight
14h 23m
May records in Marion
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (2007) | 27.0°F (1950) | 1.86 in (1892) |
| May 2 | 91.0°F (1901) | 26.1°F (1925) | 2.01 in (1892) |
| May 3 | 90.0°F (1949) | 25.0°F (2005) | 1.50 in (1919) |
| May 4 | 90.0°F (1952) | 27.0°F (1907) | 0.89 in (1990) |
| May 5 | 93.9°F (1924) | 28.9°F (1907) | 2.27 in (1982) |
| May 6 | 100.0°F (1896) | 28.0°F (1989) | 1.55 in (1960) |
| May 7 | 98.1°F (1896) | 24.1°F (1925) | 1.43 in (1993) |
| May 8 | 99.0°F (1896) | 32.0°F (1925) | 1.27 in (1995) |
| May 9 | 91.9°F (1896) | 26.1°F (1945) | 1.74 in (1996) |
| May 10 | 91.9°F (1896) | 28.0°F (1966) | 2.83 in (1959) |
| May 11 | 93.0°F (2022) | 30.0°F (1907) | 2.09 in (2005) |
| May 12 | 93.9°F (2022) | 28.0°F (1928) | 2.80 in (1905) |
| May 13 | 91.9°F (2022) | 32.0°F (2013) | 1.63 in (1978) |
| May 14 | 93.9°F (2013) | 30.0°F (1895) | 2.19 in (2018) |
| May 15 | 93.9°F (1941) | 32.0°F (1926) | 1.42 in (1986) |
| May 16 | 91.9°F (2019) | 32.0°F (1942) | 2.18 in (1974) |
| May 17 | 91.0°F (1934) | 32.0°F (1930) | 1.93 in (1986) |
| May 18 | 91.9°F (1934) | 32.0°F (1945) | 1.66 in (2004) |
| May 19 | 91.9°F (1934) | 33.1°F (1929) | 1.45 in (2019) |
| May 20 | 91.9°F (1921) | 28.9°F (1924) | 2.62 in (2025) |
| May 21 | 95.0°F (1921) | 32.0°F (1929) | 2.18 in (2004) |
| May 22 | 102.0°F (1925) | 33.1°F (1963) | 1.68 in (2004) |
| May 23 | 96.1°F (1921) | 30.9°F (1931) | 3.10 in (1930) |
| May 24 | 99.0°F (1921) | 34.0°F (1917) | 1.75 in (2019) |
| May 25 | 91.9°F (1926) | 28.0°F (1925) | 2.54 in (1922) |
| May 26 | 95.0°F (1911) | 28.9°F (1925) | 3.40 in (1986) |
| May 27 | 96.1°F (1914) | 34.0°F (1992) | 2.47 in (1899) |
| May 28 | 96.1°F (2018) | 33.1°F (1928) | 2.53 in (1954) |
| May 29 | 99.0°F (1934) | 33.1°F (1965) | 3.40 in (1962) |
| May 30 | 96.1°F (1934) | 33.1°F (1924) | 1.35 in (2008) |
| May 31 | 104.0°F (1934) | 34.0°F (1897) | 2.14 in (1991) |